First, is this your daily driver, or just a project car? Is it an inline six, or a V-8? What are your intentions with this vehicle?
If it's your daily, go through your front suspenison and repair/replace everything that is loose/bent/cracked or has play in it, then move to the back, unless something else is feeling wrong. First priority is making the car safe to drive.
If it's a project car, decide what upgrades you want to do, and make a plan. There are quite a few things that are easier to do in coordination with others. For instance: Upper
suspension arms, springs, shelby/arning drop, roller perches. All of those will be pretty much coming out at the same time, which ever one you are doing, and it will save a lot of time and effort to just do them all at once.